In Two Children s Debate on the Day , it is advocated that when the day is up, people are near, an

The reason is that it is not correct to explain the distance of the ground from the sun according to different senses.

One of the children in "Two Children Debates the Sun" said that because the sun was cold in the morning and hot at noon, the morning was far away and the noon was close, and the other said that the sun was big in the morning and small at noon, so the morning was near noon and far away, and the observation of the facts is true, so how to explain it? What's going on?

It seems that the sun is a little bigger in the morning than at noon because of the illusion of the eyes. We look at a white figure that is larger than a black figure of the same size. This is called "photoosmosis" in physics.

When the sun rises, the surrounding sky is dark and dark, so that the sun appears bright, and at noon, the sky is bright, and the difference between the brightness of the sun and the backing is not so great, which is why it seems that the sun is bigger in the morning than at noon. In short, the sun is at the same distance from us in the morning and at noon, so its magnitude is the same.

In fact, due to the intensity of solar radiation at noon, it is not realistic to observe the size of the sun directly with the naked eye. This may also be due to the impression that the sun at noon is just a bright point, while the sun at sunrise and sunset is a circle that can be observed.

Also, is it because the sun is closer to us at noon than in the morning? Neither is it. So why?

Noon is hotter than morning because the sunlight is directly on the ground at noon, and the morning sunlight is obliquely on the ground. So noon is hotter than morning.

In fact, the heat and coldness of the weather are mainly determined by the temperature of the air. The main factor affecting the air temperature is determined by the intensity of the sun's radiation, but the solar heat is not the main reason for the direct increase in air temperature. Because the heat energy directly absorbed by the air into the sunlight is only a small fraction of the total heat energy of solar radiation, most of which is absorbed by the ground.

The ground absorbs the heat of solar radiation, and then conducts it upwards to the air through heat transfer methods such as radiation and convection, which is the main reason for the increase in temperature.

In short, the fact that the sun is hot at noon and colder in the morning is not because the sun is far or near our earth.

The argument that "the sun goes near at sunrise" is based on the fact that the sun at the beginning of the day appears to be larger than the sun at noon. The basis for advocating that "the sun goes at the beginning of the day, the people are far away, and the day is near" is that it is hot at noon and cool in the morning.

The change in the size of the sun was observed with the eye.

According to the beginning of the day, as large as the car cover and the middle of the day, it is like a plate, which is not far away, small and near.

The two children's debates are selected from "Liezi. Tang Wen. "Two Children's Debate on the Sun" is an essay written by the thinker Liezi during the Warring States Period.

This is also a very educational fable. It tells the story of Confucius's encounter with two children arguing about the distance of the sun, and Confucius was unable to make a decision.

Liezi (c. 450 BC - 375 BC), known as Yukou, also known as Kou, also known as Yuankou. A representative figure of Taoism in the early Warring States period. A native of Zhengguo Putian (now Zhengzhou, Henan), after the ancient emperor Lieshan.

About the same time as Zheng Xianggong. One of the ten great men in the pre-Qin world, he was a Taoist scholar, thinker, philosopher, writer, and educator.

1. "Xueyi".

1. Translation. Yi Qiu is a person who is good at playing chess in the country. Let Yi Qiu teach two people to play chess, and one of them concentrates on learning and only listens to Yi Qiu's teachings; Although the other person was also listening to Yi Qiu's teachings, he was bent on thinking that a wild goose was about to fly, and wanted to get a bow and arrow to shoot it down.

Although the two of them learned to play chess together, the latter was not as good as the former. Is it because his intelligence is inferior to the previous one? The answer is: no.

2. Original text. Yi Qiu, the good player of the whole country. Let Yi Qiu teach two people, one of them concentrates, but Yi Qiu listens; Although one person returned to the state to listen to it, he thought that a great bird was coming, so he thought of the bow and shot it.

Although I learned from it, I was the only one who could do it. Is it its wisdom and wisdom? Said:

Not really. 2. "Two Children Distinguish the Sun".

1. Translation. One day, Confucius traveled eastward, saw two children arguing, and asked why.

One child said, "I think the sun is closer when it first rises and farther away at noon." ”

Another child thinks that the sun is farther away at the beginning of the day and closer at noon.

A child said, "When the sun first comes out, it's as big as a car cover, but at noon it's like a plate. ”

Another child said, "Isn't it hot when the sun comes out and cool when it's noon, but it's like putting your hand in hot water?" ”

Confucius also could not judge who was right and who was wrong.

The two children laughed and said, "Who says you are very wise?" ”

2. Original text. Confucius traveled eastward, saw two children arguing, and asked why.

A son said: "I go near at the beginning of the sunrise, and I am far away in the middle of the day." ”

A child is far away at the beginning of the day, and the middle of the day is near.

A son said: "The beginning of the day is as big as a car cover, and the middle of the day is like a plate, this is not for the far small and the near is big?" ”

A leaky mountain said: "The beginning of the day is cool and cool, and the middle of the day is like a soup, this is not hot for the near and cold for the far?" ”

Confucius couldn't decide.

The two children smiled and said, "Who knows more about you?" ”

Take: think.

East: To the East.

Travel: travel, study tour.

Debate: Debate, argument.

Therefore: for sake, for reason.

Take: think. Shi: Just now, just now.

Go: Distance. Mid-day: Noon.

Car cover: In ancient times, the canopy on the car, like an umbrella, was round.

And: To. Then: Yes.

Bowl: A vessel for things. The round one is the plate, and the square one is the bowl.

For: Yes. Cangcang Cool Cool: Cool, slightly chilly. Cangcang: It means cold.

Dip your hand into the hot water. Soup, hot water, boiling water. (In ancient times, it also referred to hot water for bathing.) In the text, it means that the sun is hot at noon.

Decision: Decision, decision.

Who: Who. For: the same as "predicate", said.

You: You. 知: zhì, through the fake word. "Knowledge" leads to "wisdom" and "wisdom" is smart and wise.

Think. Translation: I think the sun is closest to us at sunrise.